The Defence Infrastructure Organisation (DIO) has completed a suite of upgrades to the British Royal Navy ’s Northern Ammunition Jetty at Glen Mallan in Scotland.

The Northern Ammunition Jetty was modernised by construction engineering company VolkerStevin under a £67m contract awarded by the DIO in 2019.

It is the final jetty refurbishment in support of the UK’s £7bn Queen Elizabeth Class (QEC) Aircraft Carrier programme.

Besides VolkerStevin, DIO also worked with managing agent Jacobs, which provided engineering and professional services for the jetty, as well as designer Arch Henderson.

The jetty is used to load and unload ammunition for the UK Navy’s surface fleet.

It was last upgraded in the 1970s and had reached the end of its life.

The latest upgrade work was carried out to extend the jetty’s life by another 50 years.

The British Royal Navy noted that the previous jetty was demolished and replaced with a new 135m-long jetty structure. A total of 127 steel piles were required to build this structure.

Other upgrade works include the installation of navigation aids and five mooring dolphins. These units are connected to the Northern Ammunition jetty by a pedestrian access bridge.

Furthermore, two modular fender spacer units have been placed in front of the new fender panels as part of the upgrade works.

DIO project manager Craig MacDonald said: “It’s been such a pleasure to work on such a nationally important and dynamic project.

“The project has faced numerous challenges, but they have been overcome with good teamwork, communication and collaboration. It’s great to see this vitally important facility now in full operation.”

The jetty was handed over to its operator Defence Equipment and Support (DE&S).

VolkerStevin managing director John Cox said: “We are very proud to have played a key role in the successful delivery of all three phases of the Queen Elizabeth Class Aircraft Carrier infrastructure upgrade programme.

“The completion of this final phase is testament to the hard work and commitment of the entire team and demonstrates the benefits of a strong collaborative approach in the delivery of complex critical infrastructure projects.”